Question 932082
Let's call the angles A,B, and C.
{{{B=4A}}}
{{{C=A+B-45}}}
But for a triangle,
{{{A+B+C=180}}}
Substitute,
{{{A+4A+A+4A-45=180}}}
{{{10A=135}}}
{{{A=135/10}}}
Then,
{{{B=4(135/10)}}}
{{{B=540/10}}}
{{{B=54}}}
and,
{{{C=135/10+54-45}}}
{{{C=135/10+540/10-450/10}}}
{{{C=225/10}}}